The year-end stampede to special dividends came to the end of the trail Friday. A bunch of new companies joined highly rated Costco (COST), Las Vegas Sands (LVS), Sturm Ruger (RGR), Ralph Lauren (RL) and others who already declared special dividends to put cash back into shareholders' pockets ahead of a January dividend tax hike. Quad/Graphics (QUAD), which creates catalogs, mail inserts and other marketing tools, was among the stragglers,